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Publication numberUS1436859 A
Publication typeGrant
Publication dateNov 28, 1922
Filing dateDec 19, 1921
Priority dateDec 19, 1921
Publication numberUS 1436859 A, US 1436859A, US-A-1436859, US1436859 A, US1436859A
InventorsCorydon I Bush
Original AssigneeCorydon I Bush
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lunch or game lapboard
US 1436859 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)




Patented Nov. 28, 1922.

ATT EY Patented Nov. 2%, 1922.



Application filed December 19, 1921. Serial No. 523,341.

To all whom-"it may concern:

Be it known that I, Conrnon 1. Boss, a citizen of the United States. of America, residing at Gallipolis, in the county'oi' Galha and State of Ohio, have invented certain new and useful Improvements in Lunch or Game Lapboards; and I do hereby declare that the following is a full, clear, and exact description of the invention, reference being had to the accompanying drawing, forming a part of this specification.

The invention relates to a class of devices such as game tables which are conveniently supported upon the knees of the person while the game is being played, such tables being also adapted for use as a lunch board, as well as a reading table, and the like.

The invention consists in means for sup porting the board or table from lateral. movement, and maintaining its normal horizontal position.

The invention further consists in the novel construction and combination of parts, such as will be first fully described and then specifically pointed out in the claims.

In the drawings,

Figure l is an isometric top view of the novel game or lap board;

Fig. 2 is a view of the board in a reversed position;

Fig. 3 is a transverse sectional view of the board taken on the line 33 on Fig. 2;

Fig. 4 is a detail view in perspective of a portion of the board and oi: the novel knee clamping devices;

Figure 5 is a vertical sectional View of a portion of the board showing a modified view of the base and of the clamping device;

Fig. .6 is an alternate View of a clamping device and means for holding the arms in an open and closed position to that seen in imilar numerals of reference indicate corresponding parts in all the figures ofthe drawing.

Referring to the drawing, 7 indicates a board 01": suitable dimensions and as shown rectangular in form. A border strip 8 extends around the edges of the board and projects about one-half inch above the plane of its upper surface to prevent articles from falling off the board, and also for strengthening the board.

The lower edge of the border strip 8 at the rear portion of the board is flush therewith, but downwardly extended at the front edge as 9, an inch or more, in order to raise the front portion or the board when in use to make it level upon the knees.

Upon the underneath side or the front portion of he board is a chamber or receptacle 10, approximately one and one half inches in width and the same in depth, the

spring catch 14, holding the door securely closed and preventing the loss of the contents of the box. I

In Fig. 2 the cover 12 is shown broken away to show the checkers employed in the game within the box.

Upon the under side of the board 7, equidistant irom its forward edge'and near each end oi the board, are the novel clamping devices 15. Each device is composed of a base plate 16 (see Fig. 4) upon which are the parallel supporting straps 17-17, extending a short distance upwardly from the plate 16, forming an alley to which plates at one end are pivoted by pivot 18*, the lower end of a lever 18. This lever, as shown consists of the board supporting, knee clamping arms 19-19, to which is se cured a back plate 20, the upper ends of the plates and arms 19 being curved inwardly.

The pivot 18 extends through the upper portions oi arms l. 17, and through the plates 19--79 oi? the lever, a short distance above the lower ends of plates 19, so that the lower edge of plate 20 comes into contact with the upper surface of the base plate 16 when in an open position, the lower ends of the plates 19 being cut away at 21 to permit closure of the lever. Thus the lever can be opened only so far as to extend at right angles to the board.

Tn the base plate 16 is a longitudinal opening The base plate 16, by means of a broad headed bolt 23 extending from the board upwardly through the opening 22, upon which is a washer 24. In the upper end of the bolt is a small opening through which passes above the washer the split key 25. The bolt 23 secures the base plate to the board, yet permits it to rotate, changing the position of the lever relative to its curved inclination, so that it may be used in a clamping position inside or outside of the legs, the inward and outward movement of he slotted plate permitting an adjustment of the clamping device inwardly or outconsists of a solid rear portion 28, against which the clamp comes into contact in an open position, the lower portion of the clamp being hinged to the pivot 29 in the lower aortion of the vertical side 30.

in Figure 6, the knee clamping arms 31 and 32 are connected together by a straight wire of sufiicient strength, which extends across the lower surface of the board and secured to the board near each end by wire staples 34:. A portion of the wire between the staples is bent to form an outward projection 35, which enters a groove 36, in the board and holds the arms in an open position.

bloclr 37, securedto the lower surface of the board serves to support the inner side member of tie receptacle 10. Such other modifications may be employed as are within the scope of the appended claims.

Having fully described my invention,

messes what I now claim as new and desire to secure by Letters Patent, is:

1. The combination with a lap board, of base plates upon the lower surface, and foldable clamping arms on the base plates, and means for reversing the position of the base plates. I

2. The combination with a lap board, of base plates upon the lower surface of the board, and clamping arms on said plates, and means for adjusting the position of the base plates outwardly and inwardly.

8. The combination with a lap board, of base plates upon its lower surface, each plate having a longitudinal opening, bolts upon the board extending through said openings, securing devices on the bolts for the base plates, clamping arms pivotally connected with the base plates, and an abutment for holding said arms in an open position.

4. The combination with a lap board, of base plates upon its lower surface, each plate having a longitudinal opening, means within said opening connected with the board for securing the base plates in a sliding movement, parallel side plates on each base plate, clamping arms pivotally connected with the side plates, and a back plate on the arms extending beyond the pivots and forming abutment for said arms. 7

5. The combination with an articlesupporting board; of arms pivotally, slidably and revolubly connected to saidboard anda single means for each arm adapted to secure it in revolubly tion.

common I. BUSH.

and slidably. adjusted posi-

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2501580 *Mar 5, 1947Mar 21, 1950Nellie ReidChair arm table
US2603542 *Mar 23, 1949Jul 15, 1952Merle H ChartersStanding table for invalids
US2663603 *Jun 16, 1950Dec 22, 1953Irving NewmanLap tray with leg engaging means
US2697018 *Sep 30, 1952Dec 14, 1954Zanos Georgides GeorgeLap tray with leg engaging means
US4312507 *Oct 3, 1980Jan 26, 1982Smith Billy EPortable lighted study or game tray
US5680914 *Aug 10, 1995Oct 28, 1997Reiser; Douglas K.Portable lap office assembly having internal desktop writing surface
US6119603 *Aug 23, 1996Sep 19, 2000Lochridge; Edwin P.Tilted work surface for retro fit use
US20050092212 *Oct 31, 2003May 5, 2005Simon Alyson P.Child's travel tray
WO1997007710A1 *Aug 23, 1996Mar 6, 1997Edwin P LochridgeTilted work surface for retro fit use
U.S. Classification108/43, 108/25, 273/287, 108/15, 273/148.00B
International ClassificationA47B25/00
Cooperative ClassificationA47B25/00
European ClassificationA47B25/00